words source code：
src.zip (4.8 KB)
origin doc:
4、定作产品采购合同（V1-2023）.docx.zip (37.3 KB)
before converted：
after converted：
It disappeared,please have a check.
@hucq_landray_com_cn I cannot reproduce the problem on my side using the latest 23.4 version of Aspose.Words for Java. As I can see from the provided code, you are using some very old version of Aspose.Words. So please try using the latest version.